import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args) {
		BufferedReader buff = new BufferedReader(new InputStreamReader(System.in));

		int[] flag = new int[10];

		try {
			int count = Integer.parseInt(buff.readLine());
			for (; count > 0; --count) {
				String[] box = buff.readLine().split(" ");
				int[] num = new int[4];
				for (int i = 0; i < 4; ++i) {
					num[i] = Integer.parseInt(box[i]);
				}

				int add = -1;
				if (box[4].equals("YES")) {
					add = 1;
				}
				for (int i = 0; i < 4; ++i) {
					flag[num[i]] += add;
				}
			}

			int max = -10;
			for (int i = 0; i < 10; ++i) {
				if (max < flag[i]) {
					max = flag[i];
				}
			}
			for (int i = 0; i < 10; ++i) {
				if (flag[i] == max) {
					System.out.println(i);
					break;
				}
			}
		} catch (NumberFormatException e) {

		} catch (IOException e) {

		}
	}
}